Форуми / Cotonti / Support / File Size Limit (PFS & Avatars)

So I've been editing my Cotonti Siena site for quite some time and as I make theme adjustments I've also been trying to make system adjustments. For whatever reason I cannot upload files larger than 8.4MB. In the admin settings I can put 10MB or 40MB or whatever. However it always maxes out at 8.4MB. So I've been looking through the code to find where the limit is. I've researched this problem on the forums already but I haven't found a solution.

I want to give the users the ability to upload larger files and videos. I'm talking a 300MB video and a total PFS of 2GB for example. I don't understand why these restrictions were put on Siena. I've used Sedito and Cotonti for years and have never figured that someone would actually put on a 8MB limit. There is the ability to upload videos to Cotonti but what I don't understand is when has anyone ever uploaded a video that maxes at 8MB? I'm pretty sure that's like a 3 second video.

Also, I have an avatar that is 1.44MB and I get this error when I try to upload it: http://prntscr.com/6s7m5s So there is also a file restriction on avatars?

Maybe there is something I'm doing wrong. I'm not sure. So any help will be apreciated.